[Benzo (a) pyrene residue surveillance in retail food in the city of Xiamen, China: report from 121 samples].

Objective To investigate Benzo (a)pyrene (BaP) residue in retail food of Xiamen. Methods BaP residue in 121 retail food samples collected from Xiamen were determined by a rapid BaP detector based on derivative constant-energy synchronous fluorescence technique. Results BaP was detected in 84.3% samples and the concentration were ranged from 0.17 to 59.0 μg/kg. There were 49.6% samples exceeding 5.00 μg/kg, and most of them were roasting food (1.44 - 54.10 μg/kg), processed meat products (0.17 - 59.00 μg/kg) and aquatic products (2.79 - 36.80 μg/kg). The BaP concentration in 34 samples collected from roadside stands were 1.78 - 49.60 μg/kg, of which the rate of the samples exceeding 5.00 μg/kg was 88.2%. Conclusion The BaP contamination in retail food samples from Xiamen is serious. Key words: Benzopyrenes;  Food contamination;  Derivative constant-energy synchronous fluorescence spectrometry